對于D型(xing)管(guan)穿(chuan)(chuan)布(bu)管(guan)而(er)言(yan)，另(ling)外的(de)一(yi)(yi)個(ge)(ge)要(yao)求就是(shi)要(yao)有(you)非常高的(de)阻(zu)燃(ran)性能(neng)(neng)(neng)。因為穿(chuan)(chuan)線(xian)(xian)管(guan)是(shi)用(yong)來(lai)穿(chuan)(chuan)電(dian)(dian)(dian)線(xian)(xian)的(de)，如(ru)果不阻(zu)燃(ran)，可(ke)能(neng)(neng)(neng)會引發火(huo)災的(de)情況。對于電(dian)(dian)(dian)線(xian)(xian)管(guan)的(de)阻(zu)燃(ran)，我們可(ke)以使用(yong)點火(huo)試驗來(lai)進行檢查。例(li)如(ru)我們要(yao)取一(yi)(yi)段電(dian)(dian)(dian)線(xian)(xian)管(guan)，然后(hou)用(yong)打火(huo)機點燃(ran)，之后(hou)打火(huo)機離(li)開電(dian)(dian)(dian)線(xian)(xian)管(guan)，這時點燃(ran)的(de)電(dian)(dian)(dian)線(xian)(xian)管(guan)會自動熄滅(mie)，也就是(shi)體現出電(dian)(dian)(dian)線(xian)(xian)管(guan)的(de)一(yi)(yi)個(ge)(ge)離(li)火(huo)自熄的(de)功能(neng)(neng)(neng)，這就是(shi)屬于阻(zu)燃(ran)性能(neng)(neng)(neng)的(de)電(dian)(dian)(dian)線(xian)(xian)管(guan)。另(ling)外還一(yi)(yi)種就是(shi)根(gen)本就點不著(zhu)的(de)電(dian)(dian)(dian)線(xian)(xian)管(guan)，都是(shi)符合要(yao)求的(de)。